''Barbeuia madagascariensis'' is a

liana A liana is a long- stemmed, woody vine that is rooted in the soil at ground level and uses trees, as well as other means of vertical support, to climb up to the canopy in search of direct sunlight. The word ''liana'' does not refer to a ta ...

found only on the island of

Madagascar Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa ...

. ''Barbeuia'' has occasionally been placed in its own

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

, Barbeuiaceae. The

APG II system The APG II system (Angiosperm Phylogeny Group II system) of plant classification is the second, now obsolete, version of a modern, mostly molecular-based, system of plant taxonomy that was published in April 2003 by the Angiosperm Phylogeny Gro ...

of 2003, for instance, recognizes such a family and assigns it to the order

Caryophyllales Caryophyllales ( ) is a diverse and heterogeneous order of flowering plants that includes the cacti, carnations, amaranths, ice plants, beets, and many carnivorous plants. Many members are succulent, having fleshy stems or leaves. The betalai ...

in the clade

core eudicots The eudicots, Eudicotidae, or eudicotyledons are a clade of flowering plants mainly characterized by having two seed leaves upon germination. The term derives from Dicotyledons. Traditionally they were called tricolpates or non-magnoliid dicots ...

, after

Philippe Cuénoud Philippe Cuénoud (born July 8, 1968) is a Swiss entomologist and botanist living in Onex (near Geneva), who worked on the Psocoptera of Switzerland and Papua New Guinea, as well as on plant phylogeny. He found the only recently known population ...

sequenced a fragment of the matK gene (extracted from a seed deposited in the

Kew Kew () is a district in the London Borough of Richmond upon Thames. Its population at the 2011 census was 11,436. Kew is the location of the Royal Botanic Gardens ("Kew Gardens"), now a World Heritage Site, which includes Kew Palace. Kew is a ...

herbarium) and showed that Barbeuia does not belong in Phytolaccaceae.Cuénoud P., Savolainen V., Chatrou L.W., Powell M., Grayer R.J., Chase M.W. (2002). Molecular phylogenetics of Caryophyllales based on nuclear 18S rDNA and plastid ''rbcL'', ''atpB'', and ''matK'' DNA sequences. ''American Journal of Botany'', 89: 132–144. This represents a change from the

APG system The APG system (Angiosperm Phylogeny Group system) of plant classification is the first version of a modern, mostly molecular-based, system of plant taxonomy. Published in 1998 by the Angiosperm Phylogeny Group, it was replaced by the improved AP ...

, of 1998, which did not recognize Barbeuiaceae as a family, for lack of molecular data.

References

External links

:
Barbeuiaceae
in L. Watson and M.J. Dallwitz (1992 onwards).
The families of flowering plants
descriptions, illustrations, identification, information retrieval.'' Version: 19 August 2013. https://web.archive.org/web/20070103200438/http://delta-intkey.com/ Endemic flora of Madagascar Monotypic Caryophyllales genera Caryophyllales {{Caryophyllales-stub